Malicious PDF — malware analysis report

Static analysis result for SHA-256 29117fc5232cd0a3…

MALICIOUS

PDF

48.9 KB Created: 2020-08-05 11:16:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0ee78655111fb378ae0c55d12633473 SHA-1: 89b370e91f386c4638bbe07e0ec52e52ea8cc554 SHA-256: 29117fc5232cd0a3f5c8b8c7fb6746c03bcdc5723b22900d6d28758c6c6413f6
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious link, 'https://ttraff.ru/pify?keyword=business+proposal+sample+for+food+pdf', is identified as a known malicious redirector. The document body, though heavily obfuscated, contains similar URLs, suggesting a lure to a malicious site disguised as a business proposal. No scripts were extracted, limiting the analysis of further payload delivery.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=business+proposal+sample+for+food+pdf
    • http://files.pikeboarddd.com/uploads/1/3/1/8/131871717/8a601d87ac9b.pdf
    • http://files.selectstartpress.com/uploads/1/3/0/7/130775515/dojasozozidixuz.pdf
    • http://files.sybaritic.com/uploads/1/3/2/8/132814900/6bb23bde4a.pdf
    • http://files.carlwoodsbutchers.co.uk/uploads/1/3/2/6/132696113/48cec97691ff8fa.pdf
    • http://files.stayathomestacy.com/uploads/1/3/0/7/130738753/dupopesizekafe-roded-rodowubajofe-pajaw.pdf
    • https://cdn.shopify.com/s/files/1/0450/0701/1998/files/chris_daughtry_height.pdf
    • https://cdn.shopify.com/s/files/1/0446/9882/8954/files/asylum_in_usa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/fafaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/trailblazer_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0441/3823/4008/files/4608837645.pdf
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/53613641887.pdf
    • https://cdn.shopify.com/s/files/1/0429/9315/6259/files/68933208473.pdf
    • https://cdn.shopify.com/s/files/1/0434/5485/7369/files/levizu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/30566984684.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/vitaxosobonivanibutu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2376/1571/files/92465352119.pdf
    • https://cdn.shopify.com/s/files/1/0432/7024/2460/files/neserasusawexipawafapasu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007412.bin
cd668e1a6f8c68c58de68dbd1cd8f852edcd9dcb93477422b686b59e385c5605
pdf-font-stream PDF embedded font (sfnt) at offset 0x7412 5040 bytes
font_01_sfnt_off00008508.bin
5b18e9ee04663e833cd9c1827b688fd348b1603e4ff3ac9ec4caa920f3b4d856
pdf-font-stream PDF embedded font (sfnt) at offset 0x8508 10380 bytes
font_02_sfnt_off0000a891.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA891 4324 bytes